diff --git a/glibc.yaml b/glibc.yaml
index 6cbf486083d..6daf83a42da 100644
--- a/glibc.yaml
+++ b/glibc.yaml
@@ -53,6 +53,7 @@ environment:
   # glibc manages FORTIFY_SOURCE on per-file basis
   environment:
     CPPFLAGS: ""
+    GCC_SPEC_FILE: /dev/null
 
 pipeline:
   - uses: fetch